11.7.4Grounding Configuration (with corner-grounded delta-input)

If one phase of delta-input source is grounded (B-phase for example), the ground bus in the UPS cabinet should NOT be connected to the neutral terminal of UPS output.

The jumper cable should be removed see Figure 11.17 for the jumper cable location.

During normal operation the UPS output is floating relative to the ground. An isolation transformer is recommended at output distribution as shown in Figure 11.20.

Input Source

< UPS Cabinet >

 

3φ 3φ

Bφ N

3φ 3φ

GG

Output Distribution

3φ 3φ

3φ

N

To the

 

N

 

Load

 

 

G

G

 

Remove

Jumper Cable

FIGURE 11.20 - GROUNDING CONFIGURATION WITH CORNER-GROUNDED DELTA-INPUT.

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G8000 Series Installation and Operation Manual

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Toshiba 150, 500 KW, 480 V, 225, 300, 125, 100 operation manual Grounding Configuration with corner-grounded delta-input

480, 125, 225, 150, 480 V specifications

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